<div id="my-gui-container"></div>

<div id="my-lut-container">
  <div>Layer 0<div id="my-lut-canvases-l0" class="my-lut-canvases"></div></div>
  <div>Layer 1<div id="my-lut-canvases-l1" class="my-lut-canvases"></div></div>
</div>

<div id="r3d"></div>

<div style="background-color: #f9f9f9; width: 0; height: 0;"></div>